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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 41 | 41 |
| 42 | 42 |
| 43 // The stub cache is used for megamorphic calls and property accesses. | 43 // The stub cache is used for megamorphic calls and property accesses. |
| 44 // It maps (map, name, type)->Code* | 44 // It maps (map, name, type)->Code* |
| 45 | 45 |
| 46 // The design of the table uses the inline cache stubs used for | 46 // The design of the table uses the inline cache stubs used for |
| 47 // mono-morphic calls. The beauty of this, we do not have to | 47 // mono-morphic calls. The beauty of this, we do not have to |
| 48 // invalidate the cache whenever a prototype map is changed. The stub | 48 // invalidate the cache whenever a prototype map is changed. The stub |
| 49 // validates the map chain as in the mono-morphic case. | 49 // validates the map chain as in the mono-morphic case. |
| 50 | 50 |
| 51 | |
| 52 class CallOptimization; | |
| 53 class SmallMapList; | 51 class SmallMapList; |
| 54 class StubCache; | 52 class StubCache; |
| 55 | 53 |
| 56 | 54 |
| 57 class SCTableReference { | 55 class SCTableReference { |
| 58 public: | 56 public: |
| 59 Address address() const { return address_; } | 57 Address address() const { return address_; } |
| 60 | 58 |
| 61 private: | 59 private: |
| 62 explicit SCTableReference(Address address) : address_(address) {} | 60 explicit SCTableReference(Address address) : address_(address) {} |
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| 131 Handle<JSObject> object, | 129 Handle<JSObject> object, |
| 132 Handle<JSObject> holder, | 130 Handle<JSObject> holder, |
| 133 PropertyIndex field_index, | 131 PropertyIndex field_index, |
| 134 Representation representation); | 132 Representation representation); |
| 135 | 133 |
| 136 Handle<Code> ComputeLoadCallback(Handle<Name> name, | 134 Handle<Code> ComputeLoadCallback(Handle<Name> name, |
| 137 Handle<JSObject> object, | 135 Handle<JSObject> object, |
| 138 Handle<JSObject> holder, | 136 Handle<JSObject> holder, |
| 139 Handle<ExecutableAccessorInfo> callback); | 137 Handle<ExecutableAccessorInfo> callback); |
| 140 | 138 |
| 141 Handle<Code> ComputeLoadCallback(Handle<Name> name, | |
| 142 Handle<JSObject> object, | |
| 143 Handle<JSObject> holder, | |
| 144 const CallOptimization& call_optimization); | |
| 145 | |
| 146 Handle<Code> ComputeLoadViaGetter(Handle<Name> name, | 139 Handle<Code> ComputeLoadViaGetter(Handle<Name> name, |
| 147 Handle<JSObject> object, | 140 Handle<JSObject> object, |
| 148 Handle<JSObject> holder, | 141 Handle<JSObject> holder, |
| 149 Handle<JSFunction> getter); | 142 Handle<JSFunction> getter); |
| 150 | 143 |
| 151 Handle<Code> ComputeLoadConstant(Handle<Name> name, | 144 Handle<Code> ComputeLoadConstant(Handle<Name> name, |
| 152 Handle<JSObject> object, | 145 Handle<JSObject> object, |
| 153 Handle<JSObject> holder, | 146 Handle<JSObject> holder, |
| 154 Handle<Object> value); | 147 Handle<Object> value); |
| 155 | 148 |
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| 173 Handle<JSObject> holder, | 166 Handle<JSObject> holder, |
| 174 PropertyIndex field_index, | 167 PropertyIndex field_index, |
| 175 Representation representation); | 168 Representation representation); |
| 176 | 169 |
| 177 Handle<Code> ComputeKeyedLoadCallback( | 170 Handle<Code> ComputeKeyedLoadCallback( |
| 178 Handle<Name> name, | 171 Handle<Name> name, |
| 179 Handle<JSObject> object, | 172 Handle<JSObject> object, |
| 180 Handle<JSObject> holder, | 173 Handle<JSObject> holder, |
| 181 Handle<ExecutableAccessorInfo> callback); | 174 Handle<ExecutableAccessorInfo> callback); |
| 182 | 175 |
| 183 Handle<Code> ComputeKeyedLoadCallback( | |
| 184 Handle<Name> name, | |
| 185 Handle<JSObject> object, | |
| 186 Handle<JSObject> holder, | |
| 187 const CallOptimization& call_optimization); | |
| 188 | |
| 189 Handle<Code> ComputeKeyedLoadConstant(Handle<Name> name, | 176 Handle<Code> ComputeKeyedLoadConstant(Handle<Name> name, |
| 190 Handle<JSObject> object, | 177 Handle<JSObject> object, |
| 191 Handle<JSObject> holder, | 178 Handle<JSObject> holder, |
| 192 Handle<Object> value); | 179 Handle<Object> value); |
| 193 | 180 |
| 194 Handle<Code> ComputeKeyedLoadInterceptor(Handle<Name> name, | 181 Handle<Code> ComputeKeyedLoadInterceptor(Handle<Name> name, |
| 195 Handle<JSObject> object, | 182 Handle<JSObject> object, |
| 196 Handle<JSObject> holder); | 183 Handle<JSObject> holder); |
| 197 | 184 |
| 198 // --- | 185 // --- |
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| 711 Handle<JSObject> holder, | 698 Handle<JSObject> holder, |
| 712 Handle<Name> name, | 699 Handle<Name> name, |
| 713 PropertyIndex index, | 700 PropertyIndex index, |
| 714 Representation representation); | 701 Representation representation); |
| 715 | 702 |
| 716 Handle<Code> CompileLoadCallback(Handle<JSObject> object, | 703 Handle<Code> CompileLoadCallback(Handle<JSObject> object, |
| 717 Handle<JSObject> holder, | 704 Handle<JSObject> holder, |
| 718 Handle<Name> name, | 705 Handle<Name> name, |
| 719 Handle<ExecutableAccessorInfo> callback); | 706 Handle<ExecutableAccessorInfo> callback); |
| 720 | 707 |
| 721 Handle<Code> CompileLoadCallback(Handle<JSObject> object, | |
| 722 Handle<JSObject> holder, | |
| 723 Handle<Name> name, | |
| 724 const CallOptimization& call_optimization); | |
| 725 | |
| 726 Handle<Code> CompileLoadConstant(Handle<JSObject> object, | 708 Handle<Code> CompileLoadConstant(Handle<JSObject> object, |
| 727 Handle<JSObject> holder, | 709 Handle<JSObject> holder, |
| 728 Handle<Name> name, | 710 Handle<Name> name, |
| 729 Handle<Object> value); | 711 Handle<Object> value); |
| 730 | 712 |
| 731 Handle<Code> CompileLoadInterceptor(Handle<JSObject> object, | 713 Handle<Code> CompileLoadInterceptor(Handle<JSObject> object, |
| 732 Handle<JSObject> holder, | 714 Handle<JSObject> holder, |
| 733 Handle<Name> name); | 715 Handle<Name> name); |
| 734 | 716 |
| 735 protected: | 717 protected: |
| 736 virtual Register HandlerFrontendHeader(Handle<JSObject> object, | 718 virtual Register HandlerFrontendHeader(Handle<JSObject> object, |
| 737 Register object_reg, | 719 Register object_reg, |
| 738 Handle<JSObject> holder, | 720 Handle<JSObject> holder, |
| 739 Handle<Name> name, | 721 Handle<Name> name, |
| 740 Label* miss); | 722 Label* miss); |
| 741 | 723 |
| 742 virtual void HandlerFrontendFooter(Handle<Name> name, | 724 virtual void HandlerFrontendFooter(Handle<Name> name, |
| 743 Label* success, | 725 Label* success, |
| 744 Label* miss); | 726 Label* miss); |
| 745 | 727 |
| 746 Register CallbackHandlerFrontend(Handle<JSObject> object, | 728 Register CallbackHandlerFrontend(Handle<JSObject> object, |
| 747 Register object_reg, | 729 Register object_reg, |
| 748 Handle<JSObject> holder, | 730 Handle<JSObject> holder, |
| 749 Handle<Name> name, | 731 Handle<Name> name, |
| 750 Label* success, | 732 Label* success, |
| 751 Handle<Object> callback); | 733 Handle<ExecutableAccessorInfo> callback); |
| 752 void NonexistentHandlerFrontend(Handle<JSObject> object, | 734 void NonexistentHandlerFrontend(Handle<JSObject> object, |
| 753 Handle<JSObject> last, | 735 Handle<JSObject> last, |
| 754 Handle<Name> name, | 736 Handle<Name> name, |
| 755 Label* success, | 737 Label* success, |
| 756 Handle<GlobalObject> global); | 738 Handle<GlobalObject> global); |
| 757 | 739 |
| 758 void GenerateLoadField(Register reg, | 740 void GenerateLoadField(Register reg, |
| 759 Handle<JSObject> holder, | 741 Handle<JSObject> holder, |
| 760 PropertyIndex field, | 742 PropertyIndex field, |
| 761 Representation representation); | 743 Representation representation); |
| 762 void GenerateLoadConstant(Handle<Object> value); | 744 void GenerateLoadConstant(Handle<Object> value); |
| 763 void GenerateLoadCallback(Register reg, | 745 void GenerateLoadCallback(Register reg, |
| 764 Handle<ExecutableAccessorInfo> callback); | 746 Handle<ExecutableAccessorInfo> callback); |
| 765 void GenerateLoadCallback(const CallOptimization& call_optimization); | |
| 766 void GenerateLoadInterceptor(Register holder_reg, | 747 void GenerateLoadInterceptor(Register holder_reg, |
| 767 Handle<JSObject> object, | 748 Handle<JSObject> object, |
| 768 Handle<JSObject> holder, | 749 Handle<JSObject> holder, |
| 769 LookupResult* lookup, | 750 LookupResult* lookup, |
| 770 Handle<Name> name); | 751 Handle<Name> name); |
| 771 void GenerateLoadPostInterceptor(Register reg, | 752 void GenerateLoadPostInterceptor(Register reg, |
| 772 Handle<JSObject> interceptor_holder, | 753 Handle<JSObject> interceptor_holder, |
| 773 Handle<Name> name, | 754 Handle<Name> name, |
| 774 LookupResult* lookup); | 755 LookupResult* lookup); |
| 775 | 756 |
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| 1040 V(StringFromCharCode) \ | 1021 V(StringFromCharCode) \ |
| 1041 V(MathFloor) \ | 1022 V(MathFloor) \ |
| 1042 V(MathAbs) \ | 1023 V(MathAbs) \ |
| 1043 V(ArrayCode) | 1024 V(ArrayCode) |
| 1044 | 1025 |
| 1045 | 1026 |
| 1046 #define SITE_SPECIFIC_CALL_GENERATORS(V) \ | 1027 #define SITE_SPECIFIC_CALL_GENERATORS(V) \ |
| 1047 V(ArrayCode) | 1028 V(ArrayCode) |
| 1048 | 1029 |
| 1049 | 1030 |
| 1031 class CallOptimization; |
| 1032 |
| 1050 class CallStubCompiler: public StubCompiler { | 1033 class CallStubCompiler: public StubCompiler { |
| 1051 public: | 1034 public: |
| 1052 CallStubCompiler(Isolate* isolate, | 1035 CallStubCompiler(Isolate* isolate, |
| 1053 int argc, | 1036 int argc, |
| 1054 Code::Kind kind, | 1037 Code::Kind kind, |
| 1055 Code::ExtraICState extra_state, | 1038 Code::ExtraICState extra_state, |
| 1056 InlineCacheHolderFlag cache_holder); | 1039 InlineCacheHolderFlag cache_holder); |
| 1057 | 1040 |
| 1058 Handle<Code> CompileCallField(Handle<JSObject> object, | 1041 Handle<Code> CompileCallField(Handle<JSObject> object, |
| 1059 Handle<JSObject> holder, | 1042 Handle<JSObject> holder, |
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| 1171 Handle<CallHandlerInfo> api_call_info() const { | 1154 Handle<CallHandlerInfo> api_call_info() const { |
| 1172 ASSERT(is_simple_api_call()); | 1155 ASSERT(is_simple_api_call()); |
| 1173 return api_call_info_; | 1156 return api_call_info_; |
| 1174 } | 1157 } |
| 1175 | 1158 |
| 1176 // Returns the depth of the object having the expected type in the | 1159 // Returns the depth of the object having the expected type in the |
| 1177 // prototype chain between the two arguments. | 1160 // prototype chain between the two arguments. |
| 1178 int GetPrototypeDepthOfExpectedType(Handle<JSObject> object, | 1161 int GetPrototypeDepthOfExpectedType(Handle<JSObject> object, |
| 1179 Handle<JSObject> holder) const; | 1162 Handle<JSObject> holder) const; |
| 1180 | 1163 |
| 1181 bool IsCompatibleReceiver(Object* receiver) { | |
| 1182 ASSERT(is_simple_api_call()); | |
| 1183 if (expected_receiver_type_.is_null()) return true; | |
| 1184 return receiver->IsInstanceOf(*expected_receiver_type_); | |
| 1185 } | |
| 1186 | |
| 1187 private: | 1164 private: |
| 1188 void Initialize(Handle<JSFunction> function); | 1165 void Initialize(Handle<JSFunction> function); |
| 1189 | 1166 |
| 1190 // Determines whether the given function can be called using the | 1167 // Determines whether the given function can be called using the |
| 1191 // fast api call builtin. | 1168 // fast api call builtin. |
| 1192 void AnalyzePossibleApiFunction(Handle<JSFunction> function); | 1169 void AnalyzePossibleApiFunction(Handle<JSFunction> function); |
| 1193 | 1170 |
| 1194 Handle<JSFunction> constant_function_; | 1171 Handle<JSFunction> constant_function_; |
| 1195 bool is_simple_api_call_; | 1172 bool is_simple_api_call_; |
| 1196 Handle<FunctionTemplateInfo> expected_receiver_type_; | 1173 Handle<FunctionTemplateInfo> expected_receiver_type_; |
| 1197 Handle<CallHandlerInfo> api_call_info_; | 1174 Handle<CallHandlerInfo> api_call_info_; |
| 1198 }; | 1175 }; |
| 1199 | 1176 |
| 1200 | 1177 |
| 1201 } } // namespace v8::internal | 1178 } } // namespace v8::internal |
| 1202 | 1179 |
| 1203 #endif // V8_STUB_CACHE_H_ | 1180 #endif // V8_STUB_CACHE_H_ |
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